From 0ce0d8d6e0c420ccafa79e0203b928c3559a4311 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Fri, 5 Mar 2021 00:43:38 +0100 Subject: Split source files, merge public header files, eliminite use gpp, rewrite makefile MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- libgamma_behex_edid_uppercase.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 libgamma_behex_edid_uppercase.c (limited to 'libgamma_behex_edid_uppercase.c') diff --git a/libgamma_behex_edid_uppercase.c b/libgamma_behex_edid_uppercase.c new file mode 100644 index 0000000..5545aa5 --- /dev/null +++ b/libgamma_behex_edid_uppercase.c @@ -0,0 +1,33 @@ +/* See LICENSE file for copyright and license details. */ +#include "common.h" + + +/** + * Convert a raw representation of an EDID to an uppercase hexadecimal representation + * + * @param edid The EDID in raw representation + * @param length The length of `edid` + * @return The EDID in uppercase hexadecimal representation, + * NULL` on allocation error, `errno` will be set accordingly + */ +char * +libgamma_behex_edid_uppercase(const unsigned char *restrict edid, size_t length) +{ + char *restrict out; + size_t i; + + /* Allocate memory area for the output string */ + out = malloc((length * 2 + 1) * sizeof(char)); + if (!out) + return NULL; + + /* Translate from raw octets to hexadecimal */ + for (i = 0; i < length; i++) { + out[i * 2 + 0] = "0123456789ABCDEF"[(edid[i] >> 4) & 15]; + out[i * 2 + 1] = "0123456789ABCDEF"[(edid[i] >> 0) & 15]; + } + /* NUL-terminate the output string */ + out[length * 2] = '\0'; + + return out; +} -- cgit v1.2.3-70-g09d2